Deep well dump can



July 11, 1944. H. H. GREENE DEEP WELL DUMP CAN Filed Aug. 3, 1940 INVENIOR.

HOWARD H. GREENE 1 ATTORNEY.

i W F Patented July 11, 1944 UNITED STATES PATENT OFFICE Claims.

The invention relates to devices for depositing a charge of explosive at the bottom, or other point, of a deep well.

One object of the invention is to provide a simple, efiective, economical container having a removable bottom which may be completely detached when the container is at the discharge point to provide a discharge opening throughout the cross sectional area of the container.

It is an additional object to construct the container and the bottom attaching mechanism so that the container and mechanism may be used repeatedly by the ready application of a new bottom. 1

It is another object to release the bottom of the container by a direct pull on the releasing mechanism as distinguished from a jerk or other releasing action.

These and other detail objects of the invention are attained by the structure illustrated in the accompanying drawing in which- Figure 1 is in part a side view of the container and its detachable bottom or closure, the container and closure being sectioned longitudinally in part to more clearly illustrate the construction.

Figure 2 is a detail side elevation showing the release of the bottom securing means to permit the discharge of the contents of the container.

Figure 3 is a horizontal section taken on the line 3-3 of Figure 2 and showing the parts in discharged position.

The container I is of elongated cylindrical sheet metal form having a bail 2 at its upper end engaging a hook 3 on line L by which the container and its load may be lowered into th well and the emptied container removed from the well. The lower end of the container has its edge flanged outwardly as indicated at 4. A cap or closure 5 is provided for the lower end of the container and preferably is in the form of an inverted cone with a cylindrical base 6 received within the lower portion of container I and provided with a radial flange 1 arranged to abut the container flange 4.

A split band or ring '8 of flexible material surrounds the adjacent portions of container I and cap 5 and preferably has a channel-like contour adapted to receive outturned flanges i and I whereby when the ends of the band are drawn towards each other and the band is constricted about the container and cap, the upper portion of the channel section overlies flange 4 and the lower portion of the channel section underlies flange 1 whereby the container and closure are held in assembled relation. The ends of band 8 are provided with vertically overlapping ears 9 and I0 arranged to slidably receive a latch pin or wire I I whereby the band is held in tightened position.

A slack tie I2 is secured to the upper end of wire I l and to line L and affords means lor withdrawing the latch wire from the band ears. Preferably band 8 is flexibly secured to the container by a plurality of spring-like arms I3 which move the band away from the side of the container when the ends of the band are released from each other. However, the band ma consist of spring material, the inherent resiliency of which tends to expand the same when its ends are released.

The container may be provided with a plurality of reenforcing channels l4, one of which may receive the latch wire II and protect it and guide it in its movement with and along the container.

The ordinary use of the device contemplates the mounting of a cap on the lower end of the container, as shown in Figure 1, and the placing of a solidified stick S of nitroglycerin in the container with its weight resting upon the cap. The device is then lowered into the well by line L until the container reaches the bottom of the well, or is otherwise supported from below. Further lowering of line L will disengage hook 3 from bail 2 and upon raising line L, tie I2 will be drawn taut and latch wire II withdrawn from ears 9 and III to release the ends of the band from each other, thus permitting the band to expand and thereby free the cap from the container. Further raising of line L will result in the container being lifted by a tie I5 between the container and line I I and initially having a greater amount of slack than latch line I2. Hence the container is Withdrawn from its contents and, with the band attached, may be removed from the well and used again, a new bottom closure being secured in place by again constricting the band and latching its ends together.

When the band is expanded and cap 5 released, the open bottom of the latter is completely unobstructed throughout its area and irrespective of the spacing of the side of the container from the side of the well. Accordingly, the device may operate with smaller clearance and with greater assurance of free discharge than devices intended for the same general purpose in which the bottom closure is hinged to the side of the container. The closure is released from the can by steady upward pull on the latch line, resisted by the weight of the container and its contents, and it is not necessary to jerk the container and its load to discharge the latter.

The details of the structure are relatively unimportant and may be varied substantially without departing from the spirit of the invention, and the exclusive use of such modifications as come within the scope of the appended claims is contemplated.

What is claimed is:

1. Ina deep well device of the class described, a container, a closure for the lower end thereof, the adjacent portions of said container and closure including juxtaposed outturned elements, a split band of spring material surrounding said portions and overlying the upper of said elements and underlying the lower of-said elements, a part for holding the band distorted and constricted,

and means operable from the well head for re- ;lapping when the band is constricted, a pin slidably engaging said band ends to hold the band constricted, a line secured to said pin and'operable from the well head to detach said pin from said ends and thereby release the hold of said band on said closure and permit the contents of the container to :be discharged. I

3. In a deep Well device of the class described;

an elongated tubular container having its lower edge flanged outwardly, a cup-like cap having its upper edge flanged outwardly and arranged to abut the flanged lower edge'of said container, a band of sprin material surrounding said flanged edges and having a channel-like contour for receiving said flanges, said band being split, a detachable part securing the ends of said band against separating movement and thereby holding said band constricted and holding said container and cap together, and means operable from the well head for detaching said part and permitting said band ends to separate and thereby free said flanges and allowing said cap to separate from said container. V

V 4. In a deep well device of the class described, an elongated tubular container of sheet metal having an'outturned flange on its lower end, a closure for said container comprisin' 'a .part receivable within said container and having a ra dial flange arranged to abut said container flange, a split band of spring material surround- .ing the adjacent portions of said container and closure and having a channel-likesection to receive said flanges whereby when the ends of said band are 'forced towards each other, the band is distorted and constricted about said container and closure to hold the same in assembled relation, means for securing said band ends together to hold said lband tightened as described, and a line secured to said means and operablefrom the well head to free said band from said means so that it may open and release said closure.

5. In a deep well device of the class described, a container, a removable closure for the lower end thereof, a split ring surrounding the lower end of said container and the adjacent part of the closure, a member slidably mounted on the container and arranged in one position to hold said ring constricted and in another positionto free said ring, means attaching said ring to said container and spreadin said ring when the latter is free from said member, said member being operable by a line from the well head to release the ring.

HOWARD H. GREENE. 

